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Transport model
And finally, class representing transport model is instantiated. Transport model handles viscosity and its dependency on other variables. In our case, it is Sutherland model, where viscosity depends on temperature. Once again, the physical meaning of the models is explained in OpenFOAM User Guide. Inheritance diagram can bee seen in the figure . There are four different transport models currently:
constTransport
sutherlandTransport
polynomialTransport
logPolynomialTransport
Source code for all classes representing different transport models can be found found in
$FOAM_SRC/thermophysicalModels/specie/transport
in subdirectories named after respective transport models, eg.